Dr. John T. Ryan Profile

Dr. John T. Ryan

at Univ College Dublin

SPIE Involvement:

Author

Publications (12)

Proceedings Article | 12 March 2010 Paper

Advanced noise reduction in placental ultrasound imaging using CPU and GPU: a comparative study

G. Zombori, J. Ryan, F. McAuliffe, L. Rainford, M. Moran, P. Brennan

Proceedings Volume 7629, 762908 (2010) https://doi.org/10.1117/12.844478

KEYWORDS: Ultrasonography, Spherical lenses, Image quality, Speckle, 3D image processing, Denoising, Image segmentation, Visualization, Anisotropic diffusion, Image processing

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Proceedings Article | 24 February 2010 Paper

Spatial resolution and chest nodule detection: an interesting incidental finding

R. Toomey, M. McEntee, J. Ryan, M. Evanoff, A. Hayes, P. Brennan

Proceedings Volume 7627, 76270Q (2010) https://doi.org/10.1117/12.845254

KEYWORDS: Image resolution, Spatial resolution, Chest imaging, Chest, Diagnostics, Radiology, Radiography, Statistical analysis, Spatial frequencies, Lung

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Proceedings Article | 24 February 2010 Paper

Nuisance levels of noise effects radiologists' performance

Mark McEntee, Amina Coffey, John Ryan, Aaron O'Beirne, Rachel Toomey, Micheal Evanoff, David Manning, Patrick Brennan

Proceedings Volume 7627, 76270O (2010) https://doi.org/10.1117/12.844193

KEYWORDS: Chest, Calibration, Picture Archiving and Communication System, Radiology, Chest imaging, Acoustics, X-rays, Visualization, Heart, Ultrasonography

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Proceedings Article | 13 March 2009 Paper

The impact of faceplate surface characteristics on detection of pulmonary nodules

R. Toomey, J. Ryan, M. McEntee, J. McNulty, M. Evanoff, F. Cuffe, T. Yoneda, J. Stowe, P. Brennan

Proceedings Volume 7263, 726307 (2009) https://doi.org/10.1117/12.813505

KEYWORDS: Reflection, Light sources and illumination, Specular reflections, Chest, Radiology, Statistical analysis, Diffusion, Light scattering, Calibration, Medical imaging

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Proceedings Article | 13 March 2009 Paper

Is Grannum grading of the placenta reproducible?

Mary Moran, John Ryan, Patrick Brennan, Mary Higgins, Fionnuala McAuliffe

Proceedings Volume 7263, 72631W (2009) https://doi.org/10.1117/12.810993

KEYWORDS: Ultrasonography, Medicine, Reliability, Reflectivity, Light sources and illumination, Tissues, Calibration, Control systems, Diagnostics, Fetus

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Proceedings Article | 13 March 2009 Paper

A novel teaching tool using dynamic cues improves visualisation of chest lesions by naive observers

M. Mohamed Ali, R. Toomey, J. Ryan, F. Cuffe, P. Brennan

Proceedings Volume 7263, 726304 (2009) https://doi.org/10.1117/12.813510

KEYWORDS: Chest imaging, Chest, Radiography, Radiology, Visualization, Medicine, Copper, Receivers, Statistical analysis, Diagnostics

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Proceedings Article | 19 March 2008 Paper

Impact on image quality when a variety of x-ray source detector distances are considered for the arthritic cervical spine

Maria Joyce, Patrick Brennan, Louise Rainford, Jason Last, John Ryan

Proceedings Volume 6913, 69135B (2008) https://doi.org/10.1117/12.769685

KEYWORDS: Image quality, Spine, Visualization, Sensors, Radiography, Receptors, Image processing, Bone, X-ray sources, Image visualization

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Proceedings Article | 13 March 2008 Paper

A novel software-based technique for quantifying placental calcifications and infarctions from ultrasound

John Ryan, Fionnuala McAuliffe, Mary Higgins, Marie Stanton, Patrick Brennan

Proceedings Volume 6920, 69200P (2008) https://doi.org/10.1117/12.769464

KEYWORDS: Ultrasonography, Image segmentation, Software development, Imaging systems, Detection and tracking algorithms, Medicine, Analytical research, Tissues, Visualization, Fetus

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Proceedings Article | 6 March 2008 Paper

Radiological image presentation requires consideration of human adaptation characteristics

N. O'Connell, R. Toomey, M. McEntee, J. Ryan, J. Stowe, A. Adams, P. Brennan

Proceedings Volume 6917, 69171I (2008) https://doi.org/10.1117/12.779435

KEYWORDS: Chest, Computed tomography, Medical imaging, Eye, Lung, Brain, Visualization, Image visualization, Head, Calibration

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Proceedings Article | 6 March 2008 Paper

Visual adaptation: softcopy image contribution to the observer's field of view

R. Toomey, K. Curran, C. D'Helft, M. Joyce, J. Stowe, J. Ryan, M. McEntee, D. Manning, P. Brennan

Proceedings Volume 6917, 69170O (2008) https://doi.org/10.1117/12.770305

KEYWORDS: Eye, Visualization, Light sources and illumination, LCDs, Radiology, Medical imaging, Diagnostics, Reflection, Image visualization, Medicine

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Proceedings Article | 8 March 2007 Paper

A software system for the simulation of chest lesions

John Ryan, Mark McEntee, Saoirse Barrett, Michael Evanoff, David Manning, Patrick Brennan

Proceedings Volume 6515, 65150J (2007) https://doi.org/10.1117/12.708216

KEYWORDS: Chest, Chest imaging, Light sources and illumination, Computer simulations, Software development, Radiology, Medical imaging, Visualization, CRTs, Lung

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Proceedings Article | 8 March 2007 Paper

Ambient lighting: setting international standards for the viewing of softcopy chest images

Mark McEntee, John Ryan, Micheal Evanoff, Aoife Keeling, Dev Chakraborty, David Manning, Patrick Brennan

Proceedings Volume 6515, 65150M (2007) https://doi.org/10.1117/12.706772

KEYWORDS: Light sources and illumination, Chest, Visualization, LCDs, Lighting standards, Radiology, Calibration, Medicine, Medical imaging, Reflection

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Showing 5 of 12 publications

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